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-rw-r--r--third_party/aom/build/cmake/aom_optimization.cmake212
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diff --git a/third_party/aom/build/cmake/aom_optimization.cmake b/third_party/aom/build/cmake/aom_optimization.cmake
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+#
+# Copyright (c) 2017, Alliance for Open Media. All rights reserved
+#
+# This source code is subject to the terms of the BSD 2 Clause License and the
+# Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License was
+# not distributed with this source code in the LICENSE file, you can obtain it
+# at www.aomedia.org/license/software. If the Alliance for Open Media Patent
+# License 1.0 was not distributed with this source code in the PATENTS file, you
+# can obtain it at www.aomedia.org/license/patent.
+#
+if(AOM_BUILD_CMAKE_AOM_OPTIMIZATION_CMAKE_)
+ return()
+endif() # AOM_BUILD_CMAKE_AOM_OPTIMIZATION_CMAKE_
+set(AOM_BUILD_CMAKE_AOM_OPTIMIZATION_CMAKE_ 1)
+
+include("${AOM_ROOT}/build/cmake/util.cmake")
+
+# Translate $flag to one which MSVC understands, and write the new flag to the
+# variable named by $translated_flag (or unset it, when MSVC needs no flag).
+function(get_msvc_intrinsic_flag flag translated_flag)
+ if("${flag}" STREQUAL "-mavx")
+ set(${translated_flag} "/arch:AVX" PARENT_SCOPE)
+ elseif("${flag}" STREQUAL "-mavx2")
+ set(${translated_flag} "/arch:AVX2" PARENT_SCOPE)
+ else()
+
+ # MSVC does not need flags for intrinsics flavors other than AVX/AVX2.
+ unset(${translated_flag} PARENT_SCOPE)
+ endif()
+endfunction()
+
+# Adds an object library target. Terminates generation if $flag is not supported
+# by the current compiler. $flag is the intrinsics flag required by the current
+# compiler, and is added to the compile flags for all sources in $sources.
+# $opt_name is used to name the target. $target_to_update is made dependent upon
+# the created target.
+#
+# Note: the libaom target is always updated because OBJECT libraries have rules
+# that disallow the direct addition of .o files to them as dependencies. Static
+# libraries do not have this limitation.
+function(add_intrinsics_object_library flag opt_name target_to_update sources
+ dependent_target)
+ if("${${sources}}" STREQUAL "")
+ return()
+ endif()
+ set(target_name ${target_to_update}_${opt_name}_intrinsics)
+ add_library(${target_name} OBJECT ${${sources}})
+
+ if(MSVC)
+ get_msvc_intrinsic_flag(${flag} "flag")
+ endif()
+
+ if(flag)
+ separate_arguments(flag)
+ target_compile_options(${target_name} PUBLIC ${flag})
+ endif()
+
+ target_sources(${dependent_target} PRIVATE $<TARGET_OBJECTS:${target_name}>)
+
+ # Add the new lib target to the global list of aom library targets.
+ list(APPEND AOM_LIB_TARGETS ${target_name})
+ set(AOM_LIB_TARGETS ${AOM_LIB_TARGETS} PARENT_SCOPE)
+endfunction()
+
+# Adds sources in list named by $sources to $target and adds $flag to the
+# compile flags for each source file.
+function(add_intrinsics_source_to_target flag target sources)
+ target_sources(${target} PRIVATE ${${sources}})
+ if(MSVC)
+ get_msvc_intrinsic_flag(${flag} "flag")
+ endif()
+ if(flag)
+ foreach(source ${${sources}})
+ set_property(SOURCE ${source} APPEND PROPERTY COMPILE_FLAGS ${flag})
+ endforeach()
+ endif()
+endfunction()
+
+# Writes object format for the current target to the var named by $out_format,
+# or terminates the build when the object format for the current target is
+# unknown.
+function(get_asm_obj_format out_format)
+ if("${AOM_TARGET_CPU}" STREQUAL "x86_64")
+ if("${AOM_TARGET_SYSTEM}" STREQUAL "Darwin")
+ set(objformat "macho64")
+ elseif("${AOM_TARGET_SYSTEM}" STREQUAL "Linux")
+ set(objformat "elf64")
+ elseif("${AOM_TARGET_SYSTEM}" STREQUAL "MSYS" OR "${AOM_TARGET_SYSTEM}"
+ STREQUAL "Windows")
+ set(objformat "win64")
+ else()
+ message(FATAL_ERROR "Unknown obj format: ${AOM_TARGET_SYSTEM}")
+ endif()
+ elseif("${AOM_TARGET_CPU}" STREQUAL "x86")
+ if("${AOM_TARGET_SYSTEM}" STREQUAL "Darwin")
+ set(objformat "macho32")
+ elseif("${AOM_TARGET_SYSTEM}" STREQUAL "Linux")
+ set(objformat "elf32")
+ elseif("${AOM_TARGET_SYSTEM}" STREQUAL "MSYS" OR "${AOM_TARGET_SYSTEM}"
+ STREQUAL "Windows")
+ set(objformat "win32")
+ else()
+ message(FATAL_ERROR "Unknown obj format: ${AOM_TARGET_SYSTEM}")
+ endif()
+ else()
+ message(FATAL_ERROR
+ "Unknown obj format: ${AOM_TARGET_CPU}-${AOM_TARGET_SYSTEM}")
+ endif()
+
+ set(${out_format} ${objformat} PARENT_SCOPE)
+endfunction()
+
+# Adds library target named $lib_name for ASM files in variable named by
+# $asm_sources. Builds an output directory path from $lib_name. Links $lib_name
+# into $dependent_target. Generates a dummy C file with a dummy function to
+# ensure that all cmake generators can determine the linker language, and that
+# build tools don't complain that an object exposes no symbols.
+function(add_asm_library lib_name asm_sources dependent_target)
+ if("${${asm_sources}}" STREQUAL "")
+ return()
+ endif()
+ set(asm_lib_obj_dir "${AOM_CONFIG_DIR}/asm_objects/${lib_name}")
+ if(NOT EXISTS "${asm_lib_obj_dir}")
+ file(MAKE_DIRECTORY "${asm_lib_obj_dir}")
+ endif()
+
+ # TODO(tomfinegan): If cmake ever allows addition of .o files to OBJECT lib
+ # targets, make this OBJECT instead of STATIC to hide the target from
+ # consumers of the AOM cmake build.
+ add_library(${lib_name} STATIC ${${asm_sources}})
+
+ foreach(asm_source ${${asm_sources}})
+ get_filename_component(asm_source_name "${asm_source}" NAME)
+ set(asm_object "${asm_lib_obj_dir}/${asm_source_name}.o")
+ add_custom_command(OUTPUT "${asm_object}"
+ COMMAND ${AS_EXECUTABLE} ARGS ${AOM_AS_FLAGS}
+ -I${AOM_ROOT}/ -I${AOM_CONFIG_DIR}/ -o
+ "${asm_object}" "${asm_source}"
+ DEPENDS "${asm_source}"
+ COMMENT "Building ASM object ${asm_object}"
+ WORKING_DIRECTORY "${AOM_CONFIG_DIR}" VERBATIM)
+ target_sources(aom PRIVATE "${asm_object}")
+ endforeach()
+
+ # The above created a target containing only ASM sources. Cmake needs help
+ # here to determine the linker language. Add a dummy C file to force the
+ # linker language to C. We don't bother with setting the LINKER_LANGUAGE
+ # property on the library target because not all generators obey it (looking
+ # at you, xcode generator).
+ add_dummy_source_file_to_target("${lib_name}" "c")
+
+ # Add the new lib target to the global list of aom library targets.
+ list(APPEND AOM_LIB_TARGETS ${lib_name})
+ set(AOM_LIB_TARGETS ${AOM_LIB_TARGETS} PARENT_SCOPE)
+endfunction()
+
+# Terminates generation if nasm found in PATH does not meet requirements.
+# Currently checks only for presence of required object formats and support for
+# the -Ox argument (multipass optimization).
+function(test_nasm)
+ execute_process(COMMAND ${AS_EXECUTABLE} -hf OUTPUT_VARIABLE nasm_helptext)
+
+ if(NOT "${nasm_helptext}" MATCHES "-Ox")
+ message(FATAL_ERROR
+ "Unsupported nasm: multipass optimization not supported.")
+ endif()
+
+ if("${AOM_TARGET_CPU}" STREQUAL "x86")
+ if("${AOM_TARGET_SYSTEM}" STREQUAL "Darwin")
+ if(NOT "${nasm_helptext}" MATCHES "macho32")
+ message(FATAL_ERROR
+ "Unsupported nasm: macho32 object format not supported.")
+ endif()
+ elseif("${AOM_TARGET_SYSTEM}" STREQUAL "Linux")
+ if(NOT "${nasm_helptext}" MATCHES "elf32")
+ message(FATAL_ERROR
+ "Unsupported nasm: elf32 object format not supported.")
+ endif()
+ endif()
+ else()
+ if("${AOM_TARGET_SYSTEM}" STREQUAL "Darwin")
+ if(NOT "${nasm_helptext}" MATCHES "macho64")
+ message(FATAL_ERROR
+ "Unsupported nasm: macho64 object format not supported.")
+ endif()
+ elseif("${AOM_TARGET_SYSTEM}" STREQUAL "Linux")
+ if(NOT "${nasm_helptext}" MATCHES "elf64")
+ message(FATAL_ERROR
+ "Unsupported nasm: elf64 object format not supported.")
+ endif()
+ endif()
+ endif()
+endfunction()
+
+# Adds build command for generation of rtcd C source files using
+# build/cmake/rtcd.pl. $config is the input perl file, $output is the output C
+# include file, $source is the C source file, and $symbol is used for the symbol
+# argument passed to rtcd.pl.
+function(add_rtcd_build_step config output source symbol)
+ add_custom_command(OUTPUT ${output}
+ COMMAND ${PERL_EXECUTABLE} ARGS
+ "${AOM_ROOT}/build/cmake/rtcd.pl"
+ --arch=${AOM_TARGET_CPU}
+ --sym=${symbol} ${AOM_RTCD_FLAGS}
+ --config=${AOM_CONFIG_DIR}/config/aom_config.h
+ ${config} > ${output}
+ DEPENDS ${config}
+ COMMENT "Generating ${output}"
+ WORKING_DIRECTORY ${AOM_CONFIG_DIR} VERBATIM)
+ set_property(SOURCE ${source} PROPERTY OBJECT_DEPENDS ${output})
+ set_property(SOURCE ${output} PROPERTY GENERATED)
+endfunction()